Quick start
- Open the Stock Ratios Calculator.
- Enter the stock price you want to compare.
- Enter EPS, sales per share, and book value per share from the same reporting context when possible.
- Enter annual dividend per share, or 0 if the stock does not pay one.
- Calculate, then read P/E, P/S, P/B, dividend yield, and payout ratio as separate clues.
Best uses
Start here if one of these sounds like your job. The examples below show which inputs matter most.
- Calculate common stock valuation ratios from per-share numbers.
- Compare P/E, price-to-sales, and price-to-book side by side.
- Estimate dividend yield and payout ratio.
- Learn what each ratio is measuring before researching a stock deeper.
What this calculator is for
The Stock Ratios Calculator keeps market ratios separate. It shows how price compares with EPS, sales, book value, and dividends before you decide what those clues might mean.
Use it before comparing valuation ratios, checking whether a dividend stock needs a payout warning, or preparing sharper questions about EPS, sales, book value, dividends, debt, and growth.
What to enter
Stock ratios get misleading when a live share price is mixed with old EPS, old sales per share, old book value, or a dividend that has already changed. Keep the price, per-share numbers, and dividend period matched to the question.
- Enter stock price as the share price you want to analyze.
- Enter EPS, sales per share, and book value per share from the same reporting context when possible.
- Enter annual dividend per share if the stock pays one, or 0 if it does not.
Example walkthrough
Try the starter example: an $18 share price, $1.20 EPS, $9.50 sales per share, $2.60 book value per share, and a $0.45 annual dividend. The estimate is 15x P/E, 1.89x P/S, 6.92x P/B, 2.5% dividend yield, and 37.5% payout ratio.
- With an $18 price and $1.20 EPS, P/E is 15x.
- With $9.50 sales per share and $2.60 book value per share, P/S is 1.89x and P/B is 6.92x.
- With a $0.45 annual dividend, dividend yield is 2.5% and payout ratio is 37.5% of EPS.
Formula and steps
In plain language: The calculator divides stock price by EPS for P/E, by sales per share for P/S, and by book value per share for P/B. It divides annual dividend per share by stock price for dividend yield, then divides dividend per share by EPS for payout ratio. Use per-share numbers from the same reporting period when possible. Check whether EPS is trailing or forward, whether dividends are annualized, and whether book value per share already reflects recent buybacks or share-count changes.
The same stock price can tell different stories. P/E compares price with EPS, P/S compares price with sales per share, P/B compares price with book value, yield compares dividend with price, and payout compares dividend with EPS.
How to read the answer
Start with P/E, then compare P/S and P/B. If the dividend yield looks high, check payout ratio and dividend history before treating the yield like easy income.
- P/E compares price with earnings per share.
- Price-to-sales and price-to-book compare price with sales per share and book value per share.
- Dividend yield compares dividend with price, while payout ratio compares dividend with earnings.
Common mistakes to avoid
Most bad stock-ratio checks come from mixing fresh prices with stale per-share numbers, ignoring negative EPS, treating a low P/E like a bargain, or trusting a high dividend yield without checking payout risk.
- Do not treat a low P/E as automatically cheap or a high P/E as automatically bad.
- Do not mix a current price with stale EPS, stale sales per share, or old book value after a split, buyback, or big balance sheet change.
- Do not trust a high dividend yield without checking whether the payout can survive.
- Do not use this as investment advice. Ratios are starting clues, not a full decision.
What to try next
A related money tool can help check the same question from another angle before you rely on one result.
- Use Profitability Ratios Calculator to understand the business behind the per-share numbers.
- Use ROI Calculator for a simple return estimate.
Sources and estimate notes
OpenStax is useful here because it separates EPS, P/E, book value per share, P/S, P/B, and dividend yield as market-value and valuation checks. FINRA and the SEC are useful because real stock research also needs financial statements, earnings reports, risks, fees, and personal fit.
Source links improve transparency, but they do not turn a quick calculator into professional advice or a final loan, tax, payroll, or investment answer.
Worked examples for Stock Ratios Calculator
15x P/E, 1.89x P/S, 6.92x P/B, 2.5% yield, and 37.5% payout
30x P/E, 4.17x P/S, 9.38x P/B, and 0% dividend yield
8x P/E, 0.71x P/S, 1.52x P/B, 3.75% yield, and 30% payout
FAQ in plain language
When should I use the Stock Ratios Calculator?
Use it when you want to test the exact inputs on this page: Calculate common stock valuation ratios from per-share numbers. Compare P/E, price-to-sales, and price-to-book side by side. The result is a check against your assumptions, not proof that a lender, tax app, broker, platform, or provider will use the same number.
What do the main Stock Ratios Calculator inputs mean?
Stock price means the share price you want to compare with earnings, sales, book value, and dividends. EPS, sales per share, and book value per share means per-share fundamentals used as denominators for valuation ratios. Dividend per share means annual dividend per share used for dividend yield and payout ratio.
What is the Stock Ratios Calculator doing with my numbers?
In plain language: The calculator divides stock price by EPS for P/E, by sales per share for P/S, and by book value per share for P/B. It divides annual dividend per share by stock price for dividend yield, then divides dividend per share by EPS for payout ratio. Use per-share numbers from the same reporting period when possible. Check whether EPS is trailing or forward, whether dividends are annualized, and whether book value per share already reflects recent buybacks or share-count changes.
How should I read the Stock Ratios Calculator answer?
P/E says how many dollars of price sit on each dollar of EPS. P/S compares price with sales per share. P/B compares market price with accounting book value. Dividend yield compares dividend with price, while payout ratio compares dividend with EPS.
What does this estimate leave out?
This does not include future growth, analyst estimates, debt risk, accounting quality, share dilution, dividend cuts, buybacks, industry norms, taxes, trading fees, portfolio fit, or investment advice. Use full filings, earnings notes, cash-flow reports, debt ratios, profit ratios, dividend history, share-count notes, industry comparisons, and personal risk limits before treating a stock ratio as useful.
What should I double-check before copying the result?
Double-check EPS type, share splits, stale prices, special dividends, missing dividends, negative EPS, and whether the company changed its share count or balance sheet after the numbers you entered.
What does P/E mean?
P/E means price-to-earnings. A P/E of 15x means the stock price is 15 times the earnings per share entered. It is a comparison tool, not a yes-or-no investment answer.
Related tools
- ROI CalculatorCalculate simple ROI from starting cost, ending value, income, and costs.
- Present Value CalculatorEstimate present value of a future lump sum and regular payment stream.
- Investment CalculatorProject investment growth from starting money, monthly deposits, return, and time.
Keep exploring
If this guide is close but not exact, these links keep you near the same kind of problem.
- FinanceBrowse the full category for related tools that help with the same job.
- All free toolsSearch the complete Access Free Tools library by task, category, or tool name.
- All calculator and utility guidesFind more plain-language examples, formulas, mistakes, and result explanations.
- Free calculator resourcesStart here when you are not sure which calculator page fits.
Privacy and copying results
Recent answers stay visible only while you work in the current browser tab. They are not sent to a server.
Use Copy answer when you want to save the inputs and result in notes, homework, a message, or a project list. Check the units, labels, and limits before copying.